BIOL 202 Lecture Notes - Lecture 6: Symmetry In Biology, Flatworm, Nematode

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carmineduck394

29 Jan 2017

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Lec 5 & 6 the worms ( phyla: platyhelminthes, annelida and nematoda) When we say worms we are talking about the. Triploblastic tissue: they have an ectoderm, endoderm and a mersoderm. Acoelomate, pseudocoelomate & coelomate: wide range of coelom structure. Ringed worms (phylum annelida: segmented worms. Memory in this animal is distributed acroos the whole nervous system so both the animal. How: snail picks up the trematodes, it messes around with the. Make the eye stalks of the snail look like a caterpillar: the task of the trenmatode to get from one life cyle to another is complex, ex. It has a head , and a way to attach itself to an invertebrate host ( not eating anything ) Each of the proglottids work as independent uits: animal grows by increasing the sections in the neck. Producing a lot of eggs the recent sections become male and the later ones become femail: beef tapeworm.

Related Questions

1)Mushrooms and other fungi were once lumped in with the plant kingdom. Modern science has separated them into their own kingdom. Kingdom Fungi is distinguished from Kingdom Plantae by the fact that unlike plants fungi.

A)grow a haploid multicellular form from a haploid spore

B)have no cell walls

C)grow, rather than locomote, toward resources

D)are absorptive heterotrophs.

E)have no haploid multicellular stage

2)Members of the Kingdom Fungi are easily distinguished from the Kingdom Plantae because the Fungi

A)Do not have photosynthtic pigments.

B)Are mostly not adapted for living on land

C)Do not have cell walls

D)are primarily unicellular

E)All the above

3)Which of the following would NOT be part of a lichen?

A)chlorophytes

B) zygosporangia

C) basidiocarps

D)Soredia

E)Asci

4)The process of metamorphosis transforms a ______ into a ______________.

A)larva; sexually mature adult

B) blastopore;mouth

C)pseudocoelom; true coelom

D)zygote;blastula

E)blastula;gastrula

5)Which of the following tissues or structures could NOT be derived from ectoderm?

A) all but the digestive tract of a jellyfsh

B) all thin skin of a platyhelminth

C)the brain of a squid

D) the muscles of a nematode

E)your epidermis

6)Which of the following is NOT a characteristic of the phylum Platyhelminthes?

A) true mesodermal tissue

B) cephalization involving concentration of nerve ganglia

C) gas and water exchange is across the thin body wall

D) free living and parasitic form

E) segmentation

7)A triploblastic animal in which the fluid?filled body cavity is only partially lined (lined on one side) with mesodermal tissue is referred to as:

A)coelomate

B)deuterostome

C)acoelomate

D)protostome

E)pseudocoelomate

8)Which of the following groups are diploblastic animals?

A)corals

B) sponges

C) comb jellies

D) a and b

E) a and c

9)Animals that actively move in a unidirectional fashion through their environment would be expected to exhibit which of the following characteristics?

A) bilateral symmetry

B) sponges

C) comb jellies

D) a and b

E) a and c

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BIOL 202 Lecture Notes - Lecture 6: Symmetry In Biology, Flatworm, Nematode

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